Improvement in sulky-ploughs



@auch gietenl getraut @Hirn IREN'EUS DONALDSON, OF TOLEDO, I OWA.

Letters Patent No. 72,375, dated December 1T, 1867.

IMPROVEMENT IN SULKY-PLOUGHS.

TO ALL WHOM IT MAY CONCERN:

Bc it known that I, IREM-:us DONALDSON, of Toledo, in the county of Tama. and State oi Iowa, have i invented a new and useful Improvement in Sulky-Plouglisg and I do` hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, making part of this specification, in which-f Figure 1 is a perspective view.

Figure 2 is a rear elevation; and

Figure 3 is a plan.

The same letters when used indicate the same parts. Y

My improvements relate to the constructiouand arrangement of the carriages of sulky-ploughs, and their character will appear from the following description and claims. A i l A represents any ordinary plough, which. may be attached to the frame in t-he following manner: A beam, B, 'projecting behind the plough, is secured in front to'a brace, connecting` the plough-handlesIAE.4 The rear ofthe beam B is connected witlrthe top ofthe plough-handlcs by braces B. A standard, C, is fastened in the angle formed by the mould-board an'd land-side, and bolted to the plough-beam Al. The tongue is fastened Vto the braces D and D', the former being attached to the standard, C, and the latter to a brace extending from' the front of the beam, where it is attached by a hinged joint to the axle E. The tongue-braces are so connected as to give it a free vertical play. The axle E is attached to the lower end of the standard, C, by a roundpin passing through the lower end of thc vertical arm E. The wheel is placed on the opposite end of thehaxle, and its distance from the plough may be adjusted by the oscillation of the arm E" on the pin, the axle being" held in place, .when adjusted, by a bolt, F, attached to the standard, C, and inserted into one of a series of holes in a plate on top of the axle. The axle rests on the beam Al. The depth of the cut of the plough is regulated by means oi' the compound levers I I', having their fulcra on the caster-wheels H H' in front of and behind the plough. The lever I is attached adjustably to a standard, B', on the rear of the beam B, andit is attached by a round pin to the lever I', which is fastened to a standard projecting from the front of the ploughbeam. The lever I' projects'behind the point of attachment to the lever I, and behind the standard, O,`along which it may be moved vertically, its lateral motion being prevented by a guide carried around the standard. The cord K is fastened to the upper end ofthe lever I', and extending downward passes under a pulley on the plough-beam, and thence over and under pulleys placed on the ends ofthe oscillating arm L, which is pivoted ncnr its centre to the axle. This arm may be actuated by a handle, L', which being raised, will drawn up one cud of the arm L, and depressvv the other, thereby shortening lthe cord which is attached to the axle near the wheel, and thereby drawing down' the levers and raising the plough and frame on the caster-wheels, and reducing the depth of thecut. By moving the arm L in the reverse direction, thevploiigli'and framev are dropped, I

thus increasing the cut.

What I-fclam as my invention, and desire to secure by Letters Patent, is-

1. In combination with the plough and carriage-frame, the compound levers I I', and casters H Hplaced in front and rear ofthe plough for regulating the cut, substantially in the manner set forth.

2. In combination with the drivers seat G, the oscillating arm L, cord K, and adjusting-levers I I', arranged substantially as'and for the purpose set forth.

In testimony whereof', I have signed'my name to this specification, inthe presence of two subscribing witnesses.

' IRENEUS DONALDSON. Witnesses:

S. W. MYERS, .'CrI. W. BARKER. 

